JEE Main 2021 — Hydrogen Question with Solution
From: JEE Main 2021 (Online) 17th March Morning Shift
Question
The INCORRECT statement(s) about heavy water is (are)
(A) used as a moderator in nuclear reactor
(B) obtained as a by-product in fertilizer industry
(C) used for the study of reaction mechanism
(D) has a higher dielectric constant than water
Choose the correct answer from the options given below :
(A) used as a moderator in nuclear reactor
(B) obtained as a by-product in fertilizer industry
(C) used for the study of reaction mechanism
(D) has a higher dielectric constant than water
Choose the correct answer from the options given below :
Choose an option
Show full solutionCorrect option: A
Correct answer
A(D) only
Step-by-step explanation
Heavy water (D2O) is obtained as a by-product in
the fertilizer industry. It is used as a moderator in
nuclear reactors and for the study of the reaction
mechanisms. Its dielectric constant is lower than that
of H2O.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Hydrogen chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2021, covering the Hydrogen chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.